Document Center is acquired by Nimonik

Scope

1.1 This specification covers electrical insulating board, manufactured from kraft, cotton, or kraft and cotton pulps. This board is intended for dielectrical or structural purposes in transformers and other electrical apparatus.

1.2 Electrical insulating boards are most commonly referred to (and will be referred to herein) as pressboard. Other terms used for pressboard include transformer board, fuller board, and presspan.

1.3 This specification covers pressboard having a nominal thickness of 0.030 to 0.315 in. (0.81 to 8.0 mm). For thinner material refer to Specification D1305.

1.4 The maximum thickness available will differ with the type and the manufacturer. The maximum sheet size will differ with the thickness, type, and manufacturer.

1.5 Pressboard shall normally be plied wet without pasting. Unless specified by the purchaser, this specification does not include pressboard comprised of two or more sheets that have been laminated together using an adhesive.

Keywords

ash; board; calendered; chlorides; compressibility; cotton; density; dielectric strength; kraft; moisture; precompressed; pressboard; shrinkage; tensile strength; thickness; ICS Number Code 29.035.01 (Insulating materials in general)

To find similar documents by ASTM Volume:

10.02 (Electrical Insulation (II): D2518 - latest)

To find similar documents by classification:

29.035.01 (Insulating materials in general)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.